The Influence of Heat Treatment on the Size of the Carbide Inclusions and Hardness of Multilayer Composite Material ZD-0803

Abstract:

Technological methods are used to ensure high homogeneity of structure and composition of metals, and thereby to improve operational characteristics and technological properties of tool materials (steels, carbide steels, hard alloys, etc.). At the same time, one of the promising field for improving the technological and operational properties of these materials is the formation of their structural and chemical heterogeneity. The alternation of a large number of layers of steels with different constituents makes it possible to obtain a set of properties that are unattainable for homogeneous steel. The use of modern diffusion bonding technologies has made it recently possible to create a number of new composite materials based on steels with various constituents, and their properties can be used in the manufacture of cutting tools. The purpose of the real work is the study of influence of heat treatment modes on the structure and operational properties of multilayered compositions ZD-0803, produced by LLC "AiR Company". During the study, the structure of the composite material, its hardness and microhardness after annealing and hardening the metal were analyzed. The obtained data show that the studied material has a pronounced layered structure with a sharp transition from one layer to the next one. The technology used in the production of composites provides the practical absence of a transition zone and the absence of such frequent defects of diffusion bonding, as stratifications, pores, oxide inclusions, etc. The study proves that during heat treatment process, the size of the carbides inclusions decreases but their number increases. The work shows that these structural transformations lead to increasing of surface hardness and microhardness of the studied material layers.

• Periodical: Solid State Phenomena (Volume 284)
• Pages: 501-506
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.284.501
• Online since: October 2018
• Authors: A.N. Dildin*, V.Yu. Gerasimov, Evgeny A. Trofimov
• Keywords: Carbide Inclusions, Composite Material, Damask Steel, Hardness, Heat Treatment

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